Calorie Calculator

The New York Times has a feature that lets you estimate the number of calories you need to consume to reach your goal weight.

http://www.nytimes.com/ref/health/caloriecounter.html

Decode your Cravings

Nan Kathryn Fuchs, Ph.D., author of The Health Detective's 456 Most Powerful Healing Secrets, helps you understand your cravings in Shape magazine's June issue.

If you're craving: Gummy Bears
You may need: Protein
Why?: "Having a hankering for sugary carbs is a signal that your body wants energy," says Fuchs. For a longer-lasting boost, try to get at least 15 grams of protein at ever meal from fish, beans, or lean meat.

If you're craving: Chocolate
You may need: Magnesium
Why?: Chocolate is high in heart-healthy magnesium. "Levels dip during a woman's period," says Fuchs. Aim for at least 300 milligrams of the mineral a day, about the amount in a cup of black beans and a cup of cooked spinach.

If you're craving: French Fries
You may need: Good Fat
Why? Jonesing for greasy foods? Your likely coming up short on healthy fatty acids. Incorporate them into meals by drizzling a tablespoon of olive oil over your salad or veggies, or eat several servings of fish a week.

If you're craving: Salty Pretzels
You may need: B Vitamins
Why? When our adrenal gland, which produces stress hormones, goes into overdrive, so does your desire for salt. To avoid too much sodium, snack on bananas or whole-grain crackers, which contain stress-relieving B vitamins.

Healthy Recipe: Grilled Tuna Steaks with Pineapple-Chili Relish

Serves 4
Prep Time: 10 minutes
Cook Time: 15 minutes

Ingredients
1/4 cup plus 3/4 teaspoon white wine vinegar
1 tablespoon plus 2 teaspoons olive oil
1 tablespoon minced garlic, divided
1/2 teaspoon salt
1/4 teaspoon freshly ground pepper
4 6 ounce yellow fin tuna steaks, about 3/4 inch thick
1/4 cup chopped scallions
1 tablespoon chopped red chili with seeds (or less, to taste)
3 cups fresh diced pineapple (or 2 cups crushed pineapple canned in juice, drained)
3/4 teaspoon sugar

Preheat grill or broiler. In a large baking dish, combine 1/4 cup vinegar, 1 tablespoon oil, half the garlic, salt and pepper. Cover the tuna steaks with the mixture until well coated on each side. Set aside.
In a large stainless steel or nonstick skillet, heat remaining 2 teaspoons oil over medium heat. Saute scallions, chilies, and remaining garlic for 30 seconds. Add pineapple and stir for about 1-2 minutes, or until pineapple is thoroughly warmed through. Remove from heat, and stir in sugar and remaining vinegar. Set aside.
Place tuna steaks on preheated grill or broiler pan. Cook 4 inches from heat for 2-4 minutes on each side or until desired doneness. Top with relish and serve.

Nutritional Information, per serving (1 steak with 1/2 cup relish)
307 kcal
7 grams fat
18 grams carbohydrates
40 grams protein
2 grams iron
66 grams calcium

Can You Pinch More than an Inch?

The scale may say that you're slim, but your frame may still be carrying too much body fat, says Michele Olson, Ph.D., a professor of exercise science at Auburn University. "Women with little muscle tone may not be overweight but still have unhealthy levels of body fat," she explains. A new Italian study found that normal weight women with higher than 30% body fat are at greater risk for heart disease. To learn you fat level, try one of two tests available at many gyms: calipers, which assess skin thickness at key areas, and bioimpedance devices, which send an undetectable electrical current through the body to read the ratio of fat to other tissue. Both are reasonably accurate when used by a trained professional.

Diet and Infertility

The Diet News You Need To Know
Eating just 4 grams of trans fat a day--the amount you might find in a half of a medium serving of french fries or one Krispy Kreme glazed donut--can more than double your risk of infertility, according to a new study. "Trans fats increase insulin resistance, which has been show to negatively affect ovulation in some otherwise healthy woman, says study author Jorge Chavarro, M.D., a researcher at the Harvard School of Public Health. To reduce your intake of these artery clogging fats, look beyond the nutrition label. "A product can claim it has zero trans fats if it has anything less than half a gram," he say. To make sure a snack is really trans-fat free, double check that the ingredients list is clear of anything "partially hydrogenated" or "hydrogenated".

Strength training may reverse muscle aging

NEW YORK (Reuters) -- Strength training may not only make older adults' muscles stronger, but younger as well, a small study suggests.

It's well known that resistance exercises improve muscle strength and function in young and old alike, but the new research suggests that strength training also affects older muscles on the level of gene expression -- essentially turning back the clock on muscle aging.

The study, published in the online journal PLoS One, looked at whether strength training affects the "gene expression profile" in older adults' muscle. Genes hold the instructions from which the body manufactures proteins; gene expression refers to the processes that translate these instructions into proteins.

Analyzing small samples of muscle tissue from a group of healthy young and older adults, researchers found that older and younger muscle tissues differed significantly in their gene expression profiles. The difference indicated that older muscle tissue had impaired functioning in mitochondria -- structures within cells that act as the cell's "powerhouse."

That impairment was reversible, however. After 14 of the older adults underwent 6 months of strength training, the gene expression profile in their muscles showed a more youthful appearance.

"In a very real sense, the muscle was younger," said lead study author Dr. Simon Melov of the Buck Institute for Age Research in Novato, California.

Experts have long known that exercise is good for younger and older adults alike, Melov told Reuters, but the new findings suggest that it can "actually rejuvenate muscle" in older individuals.

The study included 25 healthy men and women older than 65, and 26 healthy adults ages 20 to 35 who had diet and exercise habits similar to the older group. By analyzing muscle tissue from each volunteer, Melov's team found age-related differences in the expression of hundreds of genes -- such that mitochondrial function in older adults appeared "dramatically impaired."

Fourteen of the older adults then went through a strength training program, working out two days a week for 6 months.

As expected, the researchers found that these volunteers boosted their muscle strength, coming closer to their younger counterparts' performance. But their muscle also showed a turnaround in gene expression that Melov described as surprisingly stark.

He said more studies are needed to see whether aerobic exercise, like walking or cycling, has similar effects on muscle -- and whether exercise might reverse molecular aging in other types of body tissue.

For now, the researchers say, their findings show that it's never too late to start exercising.

Bounce Back from a Diet Slip

You may view missing a week of exercise or grabbing a doughnut when you've been trying to lose weight as a failure. But this all-or-nothing outlook can actually undermine your future success, says Carol Tavris, Ph.D., a Los Angeles-based social psychologist and co-author of Mistakes Were Made (But Not By Me). "When you feel disappointed in yourself, pay attention to the way you explain your behavior," she says. "Thoughts or statements like 'I have no willpower' or 'I knew I'd never stick to a diet' are self-defeating and could lead you to repeat the very actions you hoped to change." Instead, admit that you screwed up and take a moment to realize that doing so was natural. "When you make a mistake with a diet, an exercise plan, or for that matter any major decision, it doesn't mean that you're a bad person or that you'll never improve," says Tavris. "It simply means that you need to renew your motivation."